aplacophora

from The Century Dictionary.

• A suborder of Amphineura. having the body vermiform, foot absent or merely a groove, and the cuticle more or less covered with spicules. It includes the families Neomeniidæ and Chætodermatidæ. Same as Solenogastres. Compare Polyplacophora.

from the GNU version of the Collaborative International Dictionary of English.

• noun plural (Zoöl.) A division of Amphineura in which the body is naked or covered with slender spines or setæ, but is without shelly plates.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun an order of Amphineura